Mach number is flow speed over speed of sound
=============================================

*Mach number* is a dimensionless quantity in fluid dynamics representing
the ratio of flow speed divided by the speed of sound in the medium.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Mach_number>`__.

.. py:currentmodule:: symplyphysics.laws.hydro.mach_number_is_flow_speed_over_speed_of_sound

.. py:data:: mach_number

    Local :attr:`~symplyphysics.symbols.classical_mechanics.mach_number`.

Symbol:
    :code:`M`

Latex:
    :math:`\text{M}`

Dimension:
    :code:`dimensionless`


.. py:data:: flow_speed

    :attr:`~symplyphysics.symbols.classical_mechanics.flow_speed` with respect to internal or external boundaries.

Symbol:
    :code:`u`

Latex:
    :math:`u`

Dimension:
    :code:`velocity`


.. py:data:: speed_of_sound

    Local :attr:`~symplyphysics.symbols.classical_mechanics.speed_of_sound`.

Symbol:
    :code:`c`

Latex:
    :math:`c`

Dimension:
    :code:`velocity`


.. py:data:: law

    :code:`M = u / c`


    Latex:
        .. math::
            \text{M} = \frac{u}{c}